The new LPH system employs an LED print head with a beam diameter of only 30 microns, half the size of previous models, making resolutions of 1,200dpi possible. This enables even finer text quality and improved image gradations.

To prevent paper skew, there are two sensors located parallel to the resist roller (between the resist roller and the drum), measuring the skew angle based on the time gap and linear velocity of paper being transferred and stopping output when paper skew exceeds a pre-set level.

The bizhub PRO 1200/1051 uses a belt transfer system that improves the quality of paper feeding and images being transferred. Using an electric charge, the gap between the paper and the belt is eliminated. The pressure of the belt ensures that toner is fixed without unevenness for higher consistency. The incidence of image repellence at the paper's edge and nip resistance which can cause inaccurate transfers is also reduced.

The optional PF-703 Paper Feed Unit utilises an air-suction paper feed unit that blows air from the sides and front. The paper then adheres to the conveyance belt by air suction. This reduces slipping caused by powder on the sheets, and ensures greater stability for high-speed output. The suction strength is automatically adjusted depending on paper type for optimised handling.

To achieve a greater image density, a new developer is being used and the developer settings have been improved. The electric charge between the drum and the developer sleeve has been strengthened, improving the developing quality. By raising the maximum image density (D-max) density fluctuations during large-scale printing have been minimised.

Attached to the paper feed unit in the main body, the ADF, the optional FD-503 Multi-fold Punch Unit and the optional FA-501 PI-PFU Unit are multi-sheet paper detection sensors that keep extra paper from being mixed in with printed materials. This ultrasound sensor detects sheets fed from all trays. When an extra sheet is found, printing is automatically suspended to prevent printing errors and speed troubleshooting.